In the link https://management.core.windows.net/{subscription-id}/services/hostedservices/{service-name}/deployments/{deployment-name}/roles/{role-name}/Operations we have replaced {service-name}, {deployment-name} and {role-name} with name of VM.

In result we have next message:
"ResourceNotFoundThe resource service name hostedservices is not supported."

List Hosted Services operation (http://msdn.microsoft.com/en-us/library/windowsazure/ee460781.aspx) shows us that we have 2 WMs as hosted services.

Get Role operaion (http://msdn.microsoft.com/en-us/library/jj157193.aspx) also gives info about each of VMs.

In my case, deployment name is the name of the first VM I created in this cloud service. So, if I added 3 machines to the same cloud service, all of them have the same deployment name - the name of the first machine.